In 1467 Jehan de Fillières bought the current Château de Filières estate and built a new building to the site of castle destroyed in Hundred Years' War. This was burnt down in 1591 during the Wars of Religion. The next castle was built in Henry IV style around 1599. Louise-Catherine Chardon de Filières rebuilt the castle again in 1767-1768.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.